Polestar
Supply Voltage Fluctuation / Sag
Charger display or LEDs flicker or dim when other large appliances in the home turn on.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Shared circuit with large loads, Undersized supply cable, Loose neutral connection, Utility voltage instability
How to Fix / Troubleshooting
Safety first: Electrical panel work should be done by an electrician.
- Check dedicated circuit: Confirm that the Polestar charger is on its own dedicated circuit as required by installation guidelines.
- Inspect panel connections: Have an electrician check for loose neutral or line connections in the main panel and at the charger breaker.
- Measure voltage: Under load, measure voltage at the charger input while other appliances cycle. Significant dips indicate wiring or supply issues.
- Upgrade wiring: If voltage sag is due to long runs or small conductors, upgrading the supply cable may be necessary.
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Repair Difficulty
Medium
3/5
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